Railway truck structure and method of assembling and disassembling the same



l 2,419,473 OF ASSEMBLING 3 Sheets-Sheet 1 HG. l.

J. c. TRAVILLA, .JR

Filed April 2s, 1944 AND DISASSEMBLING THE SAME RAILWAY TRUCK STRUCTUREAND METHOD April 22,

i .Y i D 3 Sheets-Sheet 2 Ji C. TRAVILLA, JR RAILWAY TRUCK STRUCTURE ANDMETHOD OF ASSEMBLING ANDDISASSEMBLING THE SAME Filed April 26. 1944 FIG.3.

I April 22, '1947.

FIGS

` INVENTOR-l JAMES C. TRAVILLA JR.

le J;

FIGA.

TTORNEY April 22, 1947.

J. c. TRAVILLA, JR 2,419,473 RAILWAY TRUCK STRUCTURE AND METHOD OFASSEMBLING AND DISASSEMBLING THE SAME Filed April ze, 1944 3Sheets-She-et 3 FIG] FIGS.

INVENTO'R; JAMES CTRAVILLA JR. BYQL? M ATTORNEY Patented pr. 22, 1947RAILWAY TRUCK STRUCTURE AND'Y METHODr OF ASSEMBLING AND DIS- ASSEMBL'INGTHE SAMEA James C. rravilla, Jr., Swarthrrmre,4 Pa., assignorV tovGeneralA Steel CastingsCorpcration, Granite City, Ill., acorporationeofv Delaware' Application April'26, 1944, SerialvNo-i532,710.

12 Claims.

The. invention relates to.- railway'A rollingl stock, and: moreparticularly to, railway trucks of-tlne typein which; theload-supporting bolsteris supported; n; springs. positioned, near theopposite ends of the bolster and the loads on the springs are;equalizedby leversextending across the truck so'. asa tofstabilize the verticalmovements of the oppnslte ,endsof vthe bolster, as disclosed in J. C.Travilla, Jr., andE. C., Jackson Patent 2,284,695, issueddune 2,; 1942.Thepresent invention relatestof the: construction of such stabilizinglevers and associated-.parts Vand the method of assemblin-grand.ydisassembling, them.

The main objectV oi,the in-vention is to facilitate; the; assembly andfdisassembly of the parts, and this object is attained by arranging theparts andztheirassembly so' that the .bolster springscan b'e -Compressedindependently of the stabilizing lever and; thel elements 1 supportingthe same, whereby; thealever and: elements may be relieved cil;their.floadg.andv'manipulated independently of thesprnes.

This general objectwandv other detail objects as will appear from: thefollowing description are attained by the structure illustrated in theaccompan-ying; drawings, -inwhich- Figurefl; is a top- View of a;truckofthe type refer-redljto. Pa-rtsoi the structure are broken away toVpermit thedrawing ftoibe* made` to a larger scale.

Figure-Zisinpart a-.side elevation and in part a1.-.lQngi11ld-inalvertical section taken onV the line 2r-2;of'Figure-=1.

Figure 31-is a-xtransverse vertical. section taken ontheline 3-3 ofFigure 1'.

Figure 4isa detail top. view of one endv of one of thefstabilizinglevers.

Figure; 5` isa detail vertical section takenf on the.line.5--5,of`Figure 4 and showing associated parts;y

Figurer.: is a` diagrammatic' Viewr `corresponding.-generally-to-Figurebut showing the parts im .the positiony assumed during the operation ofapplyingor'removing a bolster springer stabilizinglever to orfrom theother truck: parts.

Figure,` '7 isfasimilar'diagrammatic View illustratinge af.differentoperation of applying or removing` al bolster spring. andAstabilizing lever;

Figure 8.f-is-a` diagrammatic view'illustrati'ng another'operationof-'applying, orremoving, the bolster.,` springs and stabilizing leversto or from the bolster while-the bolster is disassembled from the othertruck parts.

Figurefil is a. diagrammatic View lookingat right angles .to Figure 8.`

Thertruck includes spaced axles.` I` with wheels 2; rjournalboxes.carryingvequalizersll on. which are. mounted-the: truck-r`springs- 5- which carry the truck` frame; 6'.v Preferably, the truck iszof the lateralymotion-bolster typeand has-pairs of swinghangers'iiandv.l I1 pivotally suspendedirom the framefby pins, Patkopposite sides of the truck, the hangers `carrying cross. bars /9 andlsfrespectively; Thefbolster 8l extendstransversely of the trucleyover-cross lbars `9 and |91 and below frame wheel-piecesb.vStabilizingalevers I0 and 20 are arrangedsubstantiallyend tov endtransversely of the truck and they arefulcrumed intermediate their endstothe'bolsterfby-r pins `ortie rods Il and-2l respectively.rTheinner-endsof levers I0 and.4 20; are interconnected by` links l I2andV Ybolts l'3,:,23. The outer end of each lever is forked toprox/'idev a. recess lfandthe underside-of the lever at each: side ofrecess I3 isf grooved-v at Rfto-rest upcn-.one-of.thecorresponding crossbarst); 19. Aseat memberf lli; 24 Ais' mounted upon. the outer endr of.eachlever.- IG, 2li and for-ms aseat for one or-more bolster-supportingsprings- I5-and 25 respectively. Preferably, rubber blocks K, eachhavingsteel 'top anclbottomplates, tot which the rubber isfvulcanized,arev interposed between the lever and the. spring seat.v Theseblocksaccom--y modate the vrelative-tilting; ofthe spring seat 4.andthe-lever. However, if desired, the f springI seat mayrest directly onthe endof the lever,` andthe parts 4'may be provided with concavo-convexY' interengagingv surfaces as shown .in Figure 8 of 'I'ravillai andJacksonY Patent. 2,284,695; issued June 2, 1942.

'I-he-vehicleebody B issupportedmainly on. the bolstercenterrplate-'IGbut body Bl and bolster 8 are .provided with cooperating-1 side bearingsS and S respectively tov take Y afporti0n offthe'body load whenYthebody.v` tilts. The upwardly facing truck .side bearings Svareimmediatelyfabove the corresponding downwardly facing portion ofthebolster' forming seats for bolster supporting springs: 15g-and 25.Theivehicle body,v thebolster;l

sion and the holes for the fulcruming pins I I, 2I

and, likely, connection pins I3, 23 must be forced into alignment toaccommodate the insertion and removal of the pins.

In the present construction, the outer end 'of each lever I9, 29 isprovided with a central recess or passage I8, and each spring seat I4,24 spans the space between the forked ends of the lever and is providedwith a depending boss I4a, 24d which may be projected through recess I8.This makes it possible to compress springs I5, 2-5 without pressure onthe levers I0, 2D and their pins II, I3, 2l and23.

YThe assembling and disassembling of the parts may be performed invarious ways, some of which will be described below as illustrative. Forexample, if the truck is completed, as shown in Figures 1-3, and it isdesired to remove levers Ill, 29 or springs I5, 25, pin 23 may bewithdrawn first (since there is no load on this pin when the parts arein their normal position), then jacks 30 (Figure 6) may be placed underthe body bolster or the car side sills or the car end sill and may beraised (the truck and body bolsters being held together by the centerpin C) until the top of the truck bolster 3 engages the underside of thetruck frame wheel pieces 6b. Then a jack 3I may be placed under one ofthe levers, 29 for example, and raised, compressing the adjacent spring25 so as to take the load off of cross bar I9, which may be swungoutwardly to clear the end of lever 20, and removed and a block 32applied to the projection 24a depending from spring seat 24, the upperportion of the block extending through the recess I8 in the lever. Thenjack 3I may be lowered until lever 20 is relieved of its load, whereuponpin'2I may be readily removed and the lever detached from the bolster.Jacks 30 may be raised further to permit spring 25 to expand to its freeheight, whereupon it may be removed. (Another extended jack could beused in place of block 32, and the lowering of such jack would render itunnecessary to further elevate jacks 39 as described.) Cross bar 9,lever III and spring I may be removed similarly. All the parts may bereassembled by reversing the order of the steps described above.

Another operation for removing the levers and bolster springs may followthe initial steps described above but without first removing pin 23.After the bolster is supported from the center pin and jack 3l hasrelieved cross bar I9 of its load, the cross bar is swung out from underlever 20, and jack 3l may be lowered, but the downward movement of lever29 under the thrust of spring 25 will be limited by the connection ofthe inner end of the lever to lever I0 and the support of the outer endof the latter by cross bar 9. Hence jack 3I may be disengaged from lever20 and may be shifted to the position in which block 32 is indicatedwhere it may project through the recess I8 in the end of lever 20 andmay be elevated to relieve lever 29 of the pressure of bolster spring25, whereupon pins 2I and 23 may be readily removed and lever 20 droppedfrom the assembly. Thereafter lever I0 may be removed by use of jack 3|and block 32 as described in the preceding paragraph. Obviously, leverI9 may single jack (see Figure 7).

4 be first removed, independently of lever 20, in the same manner lever29 is removed as described herein. The operation or operations may bereversed for assembling the springs and levers with the bolster.

If a'plurality of jacks are not available to operate as described above,it is possible to disassemble and reassemble the parts by use of a Thesingle jack 33 may be placed under lever 2B and elevated until vthebolster has been lifted an amount exceeding the distance between thefree height and the load height of the bolster springs. (During thismovement, the bolster will have engaged the underside of the frame wheelpieces and the parts will be in the relative positions shown.) Then thecar body may be supported by blocks L under the adjacent end sill orside sills similar to the supports afforded by jacks 30 (Figure `6) anda block 34 placed between the inner end of lever I9 and rib 8a on thebolster. This block will keep the bolster springs compressed to theirnormal loaded height irrespective of jack 33. Then jack 33 may belowered and both cross bars 9 and I9 will be relieved of their load andbar I9 may be swung outwardly to clear the outer ends of lever 29 andmay be removed or the entire swing hanger assembly may be detached byremoving the associated swing hanger pins P. Then the jack may beshifted to the position indicated in broken lines at 33a where itprojects through the recess I8 in the end of lever 20 and may beextended to relieve the lever of the pressure of bolster spring 25,whereupon pins 2I and 23 may be readily removed and lever 20 droppedfrom the assembly.

Then the jack may be lowered, thus allowing spring 25 to expand to itsfree height when it may be removed. The other bolster spring I'5 remainscompressed due to block 34. After removing bar 9, which is free of loadas explained above, the jack may be placed under the seat of spring I5andv raised to take the pressure of the spring off of lever I9 when itsfulcrum pin I I may be removed and the lever and block 34 may bedropped. Then the jack may be lowered until spring I5 is expanded to itsfree length when the jack and the spring may be removed. The parts maybe assembled in like manner but with the operations in reverse order.

If the truck is to be assembled, or disassembled, independently of thecar body as, for example, in the plant where the truck is manufactured,or in a car repair shop or other place with suitable equipment, asreferred to below, the operation may be carried out by inverting thebolster 8 and resting it upon suitable supports 49, as shown in Figure8, where it will be elevated from the floor. Then the springs I5 and 25may be placed on the spring-engaging portions of the bolster. Then thespring seats I4 and 24 may be placed upon the springs. Then the blocks4I may be placed upon the projections I4a and 24a. of the spring seatsand a beam 42 may be placed upon blocks 4I. This beam may be moveddownwardly to compress springs I5 and 25 by lowering a weight from anoverhead crane or like tool, or by the ram of a hydraulic press, or ayoke comprising elements 43, 44 and 45 may be applied to the assembly,as shown in Figure 9, and a jack 46 used as indicated to force beam 42downwardly, thus compressing springs I5 and 25. Then levers I0 and 20,with their pins II, 2|, I3 and 23, may be assembled with the bolster anda block 4l placed between lever I0 and the opposing rib.

April 22, 1947. F B, w' ox 2,419,414

vAPPARATUS Fon TAKING PHOTOGRAPHS Filed Aug; s, 1942 8 sheets-sheet 1JedQ/fm Wilcox

